Note F - Supplemental Cash Flow Information (Details Textual) - USD ($)	6 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Mar. 31, 2016
Interest Paid, Net	$ 0	$ 0
Income Taxes Paid	13,500	161,500
Dividends Payable, Current	67,994	$ 67,994	$ 67,994
Other Significant Noncash Transaction, Value of Consideration Given	$ 293,000